Table 1.

Quantitative evaluation of COVID-19 segmentation results

	Model	Parameters	Dice (%)	Sensitivity (%)	Specificity (%)
Baseline	SegNet + DL		86.06	86.30	99.45
	SegNet + TL	α = 0.7, β = 0.3	71.02	67.54	99.48
	SegNet + TL	α = 0.5, β = 0.5	68.97	66.70	99.49
	SegNet + TL	α = 0.3, β = 0.7	74.85	86.38	98.70
	SegNet + FTL	α = 0.7, β = 0.3, γ = 4/3	86.58	82.47	99.71
	SegNet + FTL	α = 0.5, β = 0.5, γ = 4/3	87.44	88.27	99.54
	SegNet + FTL	α = 0.3, β = 0.7, γ = 4/3	87.56	92.13	99.39
Ours	A-SegNet + DL		88.52	88.90	99.56
	A-SegNet + TL	α = 0.7, β = 0.3	74.65	71.07	99.44
	A-SegNet + TL	α = 0.5, β = 0.5	88.52	88.31	99.62
	A-SegNet + TL	α = 0.3, β = 0.7	74.61	79.03	99.28
	A-SegNet + FTL	α = 0.7, β = 0.3, γ = 4/3	86.96	82.22	99.75
	A-SegNet + FTL	α = 0.5, β = 0.5, γ = 4/3	89.16	87.99	99.66
	A-SegNet + FTL	α = 0.3, β = 0.7, γ = 4/3	89.61	92.73	99.51